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Lesson 34 of 84 · Structure and Function
ExperimentHow Trees Make Oxygen
What You'll Learn
All living things share basic characteristics: they grow, reproduce, respond to their environment, and need energy to survive. Plants make their own food through photosynthesis, while animals must eat other organisms.
Key Words
- community
- environment
- nutrients
Materials Needed
- markers
- tape
- small pots
- cotton balls
- zip-lock bags
Safety First
- Handle glass items carefully to avoid breakage.
- Do not mix unknown chemicals together.
Steps
Step 1 — Read
Read and learn: All living things share basic characteristics: they grow, reproduce, respond to their environment, and need energy to survive. Plants make their own food through photosynthesis, while animals must eat other organisms.
Step 2 — Do
Follow the procedure carefully, step by step.
Step 3 — Observe
Compare the before and after states.
Step 4 — Record
Write your conclusion: did the results match your hypothesis?
Check Your Understanding
Question 1
1 of 3What is the main source of energy for most food chains?